Rotary diverter valve

Abstract

The utility model relates to the technical field of rotary diverter valves, in particular to a rotary diverter valve. According to the technical scheme, the valve comprises a valve element and a shell, the valve element is rotationally connected into the shell, two oil channels are formed in the valve element, openings in the upper ends of the two oil channels are both located on the side wall of the valve element and distributed in an up-down staggered mode, and openings in the bottoms of the two oil channels are both located in the bottom of the valve element; outer edge grooves are formed in the positions, aligned with the opening of the oil channel, of the side wall of the valve element, a sealing plate is fixed to the position, aligned with the opening in the upper end of the oil channel, in the shell, the inner side of the sealing plate is attached to the side wall of the valve element, and an injection hole is formed in the position, aligned with the opening of the oil channel, of the shell. Sealing monitoring is carried out in an air pressure monitoring mode, when leakage occurs inside, the leakage can be found in time, larger potential safety hazards caused by untimely overhaul can be avoided, meanwhile, the outer edge groove is formed in the oil way inlet for flow guiding, and the response speed of oil way switching can be increased.

Description

Technical Field

[0001] This utility model relates to the field of rotary diverter valve technology, specifically a rotary diverter valve. Background Technology

[0002] A rotary diverter valve is a device used to control the direction and flow rate of fluids. It is widely used in hydraulic systems, pneumatic equipment, chemical processes, heating systems, water treatment and many other fields. The rotary diverter valve guides the fluid to different paths by changing the structure of the internal channel, thereby achieving precise control of the fluid flow direction and flow rate. Its working principle mainly relies on the rotation and movement of the valve core. When the valve core rotates, the liquid at the inlet is diverted to different outlets.

[0003] During use, especially with a dual-channel valve core structure, oil injection can only be performed when the oil passage opening on the valve core is rotated to align with the injection hole on the outer shell. If the alignment or overlap is not achieved, oil injection cannot be performed. Without a flow guiding structure, the overlap angle is small, resulting in a larger rotation angle required to achieve the switching operation, which reduces the response speed. In addition, for the sealing monitoring of the rotary diverter valve, accurate judgment cannot be made without hydraulic oil overflow. Although there is no hydraulic oil overflow when the sealing between different oil passages is not perfect, it still has a certain impact on the diversion switching. If it is not repaired in time, it will lead to greater safety hazards. Therefore, it is necessary to design a rotary diverter valve with internal sealing monitoring. Utility Model Content

[0004] The purpose of this invention is to provide a rotary diverter valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a valve core and a housing. The valve core is rotatably connected within the housing. Two oil passages are formed within the valve core. The upper openings of both oil passages are aligned with the sidewall of the valve core and are staggered vertically. The lower openings of both oil passages are located at the bottom of the valve core. An outer groove is formed on the sidewall of the valve core aligned with the oil passage openings. A sealing plate is fixed inside the housing aligned with the upper opening of the oil passages. The inner side of the sealing plate is in contact with the sidewall of the valve core. An injection hole is formed on the housing aligned with the oil passage openings. The injection holes are linearly distributed vertically. A pressure groove is formed on the sidewall of the valve core between the upper openings of the two oil passages. A pressure sensor is installed in the pressure groove. A rear cover is fixed to the upper end of the housing by bolts.

[0006] Preferably, an air injection hole is provided on the side wall of the outer casing at a position corresponding to the air pressure groove, and a one-way valve is installed in the air injection hole.

[0007] Preferably, a controller is fixed to the side wall of the housing, and an indicator light is installed on the controller.

[0008] Preferably, the oil passages are located in a serpentine pattern within the valve core, with the upper opening tangent to the inner oil passages. The outer grooves are semi-circular arc structures, and the horizontal distance between the two ends of the upper and lower outer grooves is equal to the diameter of the oil injection hole.

[0009] Preferably, a pair of sealed bearings are installed between the valve core and the housing, and the sealed bearings are located on the side away from the sealing plate.

[0010] Preferably, a sealing gasket is installed on the inner side of the openings at both the top and bottom of the outer casing, and a sealing gasket is provided at the bottom opening of the oil passage.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by using air pressure monitoring for sealing monitoring, leaks can be detected in time, avoiding greater safety hazards caused by untimely maintenance; at the same time, the outer groove set at the oil inlet for flow guidance can improve the response speed of oil circuit switching. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall assembly structure of a rotary diverter valve according to the present invention;

[0013] Figure 2 This is a schematic diagram of the external structure of a rotary diverter valve core according to the present invention;

[0014] Figure 3 This is a schematic diagram of the external structure of the housing of a rotary diverter valve according to the present invention;

[0015] Figure 4 This is a top sectional view of the combination of valve core and outer shell of a rotary diverter valve according to this utility model.

[0016] In the diagram: 1. Valve core; 11. Oil passage; 12. Outer groove; 13. Connecting flange; 14. Sealed bearing; 2. Housing; 21. Sealing plate; 22. Injection hole; 3. Rear cover; 4. Air pressure groove; 41. Air pressure sensor; 42. Controller; 43. Indicator light; 44. Air injection port; 45. Check valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: including a valve core 1 and a housing 2. The valve core 1 is rotatably connected inside the housing 2. Two oil passages 11 are opened inside the valve core 1. The upper openings of the two oil passages 11 are aligned with the side wall of the valve core 1 and are staggered vertically. The bottom openings of the two oil passages 11 are located at the bottom of the valve core 1. An outer groove 12 is opened on the side wall of the valve core 1 at a position aligned with the opening of the oil passage 11. A sealing plate 21 is fixed inside the housing 2 at a position aligned with the upper opening of the oil passage 11. The inner side of the sealing plate 21 is in contact with the side wall of the valve core 1. An injection hole 22 is opened on the housing 2 at a position aligned with the opening of the oil passage 11. The injection holes 22 are arranged vertically in a straight line. A pressure groove 4 is opened on the side wall of the valve core 1 between the upper openings of the two oil passages 11. A pressure sensor 41 is installed in the pressure groove 4. A rear cover 3 is fixed to the upper end of the housing 2 by bolts. Sealing gaskets are installed inside the openings at both the upper and lower ends of the housing 2. A sealing gasket is provided at the bottom opening of the oil passage 11.

[0019] An air injection hole 44 is provided on the side wall of the outer casing 2 at a position corresponding to the air pressure groove 4. A one-way valve 45 is installed in the air injection hole 44. A controller 42 is fixed on the side wall of the outer casing 2. An indicator light 43 is installed on the controller 42. Gas is injected into the air pressure groove 4 through the air injection hole 44 to form a predetermined air pressure inside. When the sealing plate 21 between the openings of the upper and lower oil passages 11 fails, the air pressure in the air pressure groove 4 will decrease, which will illuminate the indicator light 43 to achieve the purpose of monitoring.

[0020] The oil passage 11 is located inside the valve core 1 and is distributed in a serpentine pattern. The upper opening is tangent to the inner oil passage 11. The outer groove 12 has a semi-circular arc structure. The horizontal distance between the two ends of the upper and lower outer grooves 12 is equal to the diameter of the oil injection hole. A pair of sealed bearings 14 are installed between the valve core 1 and the outer shell 2. The sealed bearings 14 are located on the side away from the sealing plate 21. The injection hole 22 only needs to be rotated to the position aligned with the outer groove 12 to perform the injection operation. It does not need to be rotated to be completely aligned with the upper opening of the oil passage 11. Therefore, the required switching response time is shortened. In addition, the spiral distribution of the oil passage 11 can ensure that the hydraulic oil can be injected more smoothly, avoiding the large resistance when flowing at right angles and reducing the kinetic energy loss of the flow.

[0021] Working principle: The injection hole 22 at the upper end of the outer shell 2 is connected to an external oil pipe, and a rotary drive is connected via a connecting flange 13. When the valve core 1 rotates, the upper openings of different oil passages 11 can be aligned with different injection holes 22 in turn, achieving the purpose of switching oil passages 11. During this process, the injection hole 22 only needs to be rotated to the position aligned with the outer groove 12 to perform the injection operation, without having to rotate it to be completely aligned with the upper opening of the oil passage 11. Therefore, the required switching response time is shortened. Furthermore, the spirally distributed oil passages 11 can ensure that the hydraulic oil can be injected more smoothly, avoiding greater resistance when flowing at right angles and reducing the kinetic energy loss of the flow. At the same time, during operation, gas can be injected into the air pressure groove 4 through the air injection hole 44 to form a predetermined air pressure inside. When the sealing plate 21 between the openings of the upper and lower oil passages 11 malfunctions, it will cause the air pressure in the air pressure groove 4 to drop, thereby illuminating the indicator light 43 to achieve the purpose of monitoring. This allows for timely repair when a sealing failure occurs, preventing the hydraulic oil in different oil passages 11 from flowing into each other.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary diverter valve, comprising a valve core (1) and a housing (2), characterized in that: The valve core (1) is rotatably connected inside the outer casing (2). Two oil passages (11) are formed inside the valve core (1). The upper openings of both oil passages (11) are aligned with the sidewall of the valve core (1) and are staggered vertically. The bottom openings of both oil passages (11) are located at the bottom of the valve core (1). An outer groove (12) is formed on the sidewall of the valve core (1) at a position aligned with the opening of the oil passage (11). A [missing information - likely a device or structure] is fixed inside the outer casing (2) at a position aligned with the upper opening of the oil passage (11). A sealing plate (21) is attached to the inner side of the valve core (1). An injection hole (22) is provided on the outer shell (2) and aligned with the opening of the oil passage (11). The injection holes (22) are distributed vertically. A pressure groove (4) is provided on the side wall of the valve core (1) and located between the upper openings of the two oil passages (11). A pressure sensor (41) is installed in the pressure groove (4). A rear cover (3) is fixed to the upper end of the outer shell (2) by bolts.

2. The rotary diverter valve according to claim 1, characterized in that: An air injection hole (44) is provided on the side wall of the outer shell (2) at a position corresponding to the air pressure groove (4), and a one-way valve (45) is installed in the air injection hole (44).

3. A rotary diverter valve according to claim 2, characterized in that: A controller (42) is fixed to the side wall of the outer casing (2), and an indicator light (43) is installed on the controller (42).

4. A rotary diverter valve according to claim 1, characterized in that: The oil passage (11) is located in the valve core (1) and is distributed in a serpentine pattern. The upper opening is tangent to the inner oil passage (11). The outer groove (12) is a semi-circular arc structure. The horizontal distance between the two ends of the upper and lower outer grooves (12) is equal to the diameter of the oil injection hole.

5. A rotary diverter valve according to claim 1, characterized in that: A pair of sealed bearings (14) are installed between the valve core (1) and the outer shell (2), and the sealed bearings (14) are located on the side away from the sealing plate (21).

6. A rotary diverter valve according to claim 1, characterized in that: The inner sides of the openings at both the top and bottom of the outer casing (2) are equipped with sealing gaskets, and the bottom opening of the oil passage (11) is provided with a sealing gasket.

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